diff --git a/examples/textures/textures_image_drawing.c b/examples/textures/textures_image_drawing.c index 203b3cd3..190fb859 100644 --- a/examples/textures/textures_image_drawing.c +++ b/examples/textures/textures_image_drawing.c @@ -42,7 +42,7 @@ int main(void) // Draw on the image with a few image draw methods ImageDrawPixel(&parrots, 10, 10, RAYWHITE); - ImageDrawCircle(&parrots, 10, 10, 5, RAYWHITE); + ImageDrawCircleLines(&parrots, 10, 10, 5, RAYWHITE); ImageDrawRectangle(&parrots, 5, 20, 10, 10, RAYWHITE); UnloadImage(cat); // Unload image from RAM diff --git a/src/raylib.h b/src/raylib.h index ac5d6e6a..7e4fdf3f 100644 --- a/src/raylib.h +++ b/src/raylib.h @@ -1287,6 +1287,8 @@ RLAPI void ImageDrawLine(Image *dst, int startPosX, int startPosY, int endPosX, RLAPI void ImageDrawLineV(Image *dst, Vector2 start, Vector2 end, Color color); // Draw line within an image (Vector version) RLAPI void ImageDrawCircle(Image *dst, int centerX, int centerY, int radius, Color color); // Draw circle within an image RLAPI void ImageDrawCircleV(Image *dst, Vector2 center, int radius, Color color); // Draw circle within an image (Vector version) +RLAPI void ImageDrawCircleLines(Image *dst, int centerX, int centerY, int radius, Color color); // Draw circle outline within an image +RLAPI void ImageDrawCircleLinesV(Image *dst, Vector2 center, int radius, Color color); // Draw circle outline within an image (Vector version) RLAPI void ImageDrawRectangle(Image *dst, int posX, int posY, int width, int height, Color color); // Draw rectangle within an image RLAPI void ImageDrawRectangleV(Image *dst, Vector2 position, Vector2 size, Color color); // Draw rectangle within an image (Vector version) RLAPI void ImageDrawRectangleRec(Image *dst, Rectangle rec, Color color); // Draw rectangle within an image diff --git a/src/rtextures.c b/src/rtextures.c index 12ba4923..5a77ac7b 100644 --- a/src/rtextures.c +++ b/src/rtextures.c @@ -2716,7 +2716,36 @@ void ImageDrawLineV(Image *dst, Vector2 start, Vector2 end, Color color) } // Draw circle within an image -void ImageDrawCircle(Image *dst, int centerX, int centerY, int radius, Color color) +void ImageDrawCircle(Image* dst, int centerX, int centerY, int radius, Color color) +{ + int x = 0, y = radius; + int decesionParameter = 3 - 2 * radius; + + while (y >= x) + { + ImageDrawRectangle(dst, centerX - x, centerY + y, x * 2, 1, color); + ImageDrawRectangle(dst, centerX - x, centerY - y, x * 2, 1, color); + ImageDrawRectangle(dst, centerX - y, centerY + x, y * 2, 1, color); + ImageDrawRectangle(dst, centerX - y, centerY - x, y * 2, 1, color); + x++; + + if (decesionParameter > 0) { + y--; + decesionParameter = decesionParameter + 4 * (x - y) + 10; + } else { + decesionParameter = decesionParameter + 4 * x + 6; + } + } +} + +// Draw circle within an image (Vector version) +void ImageDrawCircleV(Image* dst, Vector2 center, int radius, Color color) +{ + ImageDrawCircle(dst, (int)center.x, (int)center.y, radius, color); +} + +// Draw circle outline within an image +void ImageDrawCircleLines(Image *dst, int centerX, int centerY, int radius, Color color) { int x = 0, y = radius; int decesionParameter = 3 - 2*radius; @@ -2742,10 +2771,10 @@ void ImageDrawCircle(Image *dst, int centerX, int centerY, int radius, Color col } } -// Draw circle within an image (Vector version) -void ImageDrawCircleV(Image *dst, Vector2 center, int radius, Color color) +// Draw circle outline within an image (Vector version) +void ImageDrawCircleLinesV(Image *dst, Vector2 center, int radius, Color color) { - ImageDrawCircle(dst, (int)center.x, (int)center.y, radius, color); + ImageDrawCircleLines(dst, (int)center.x, (int)center.y, radius, color); } // Draw rectangle within an image